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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        function Star(uname,age){
            this.uname = uname;
            this.age = age;
        }
        // Star.prototype.sing = function(){
        //     console.log('我会唱歌');
        // }
        Star.prototype = {
            constructor: Star,
            sing: function(){
                console.log('我会唱歌');
            },
            movie: function(){
                console.log('我会演电影');
            }
        }
        var ldh = new Star('刘德华',18);
        var zxy = new Star('张学友',20);
        console.log(Star.prototype.constructor);
        console.log(ldh.__proto__.constructor);
    </script>
</body>
</html>